Adds Markdown table output support; bump to version 0.2.0

[kmcquade]

What does this PR do?

• You can now generate a Markdown table summary with --table. This fixes #61, and adds tabulate as a dependency.
• This allows you to copy/paste it into Confluence using the Markdown Macro. It is easier for people to read this than to read a JSON policy.

Example:

aws-allowlister generate --pci --table

The results will look like this:

Service Prefix	Service Name
account	AWS Accounts
acm	AWS Certificate Manager
amplify	AWS Amplify
amplifybackend	AWS Amplify Admin
apigateway	Manage Amazon API Gateway
application-autoscaling	Application Auto Scaling
appmesh	AWS App Mesh
appstream	Amazon AppStream 2.0
appsync	AWS AppSync
athena	Amazon Athena
autoscaling	Amazon EC2 Auto Scaling
autoscaling-plans	AWS Auto Scaling
aws-portal	AWS Billing
backup	AWS Backup
batch	AWS Batch
cassandra	AWS Managed Apache Cassandra Service
chatbot	AWS Chatbot
clouddirectory	Amazon Cloud Directory
cloudformation	AWS CloudFormation
cloudfront	Amazon CloudFront
cloudhsm	AWS CloudHSM
cloudtrail	AWS CloudTrail
cloudwatch	Amazon CloudWatch
codebuild	AWS CodeBuild
codecommit	AWS CodeCommit
codedeploy	AWS CodeDeploy
codepipeline	AWS CodePipeline
cognito-identity	Amazon Cognito Identity
cognito-idp	Amazon Cognito User Pools
cognito-sync	Amazon Cognito Sync
comprehend	Amazon Comprehend
comprehendmedical	Comprehend Medical
config	AWS Config
connect	Amazon Connect
databrew	AWS Glue DataBrew
dataexchange	AWS Data Exchange
datasync	DataSync
directconnect	AWS Direct Connect
dms	AWS Database Migration Service
ds	AWS Directory Service
dynamodb	Amazon DynamoDB
ebs	Amazon Elastic Block Store
ec2	Amazon EC2
ec2messages	Amazon Message Delivery Service
ecr	Amazon Elastic Container Registry
ecs	Amazon Elastic Container Service
eks	Amazon Elastic Container Service for Kubernetes
elasticache	Amazon ElastiCache
elasticbeanstalk	AWS Elastic Beanstalk
elasticfilesystem	Amazon Elastic File System
elasticloadbalancing	Elastic Load Balancing V2
elasticmapreduce	Amazon Elastic MapReduce
es	Amazon Elasticsearch Service
events	Amazon EventBridge
execute-api	Amazon API Gateway
firehose	Amazon Kinesis Firehose
fms	AWS Firewall Manager
forecast	Amazon Forecast
freertos	Amazon FreeRTOS
fsx	Amazon FSx
glacier	Amazon Glacier
globalaccelerator	AWS Global Accelerator
glue	AWS Glue
greengrass	AWS IoT Greengrass
groundstation	AWS Ground Station
guardduty	Amazon GuardDuty
health	AWS Health APIs and Notifications
iam	Identity And Access Management
importexport	AWS Import Export Disk Service
inspector	Amazon Inspector
iot	AWS IoT
iot-device-tester	AWS IoT Device Tester
iotdeviceadvisor	AWS IoT Core Device Advisor
iotevents	AWS IoT Events
iotwireless	AWS IoT Core for LoRaWAN
kendra	Amazon Kendra
kinesis	Amazon Kinesis
kinesisanalytics	Amazon Kinesis Analytics V2
kinesisvideo	Amazon Kinesis Video Streams
kms	AWS Key Management Service
lakeformation	AWS Lake Formation
lambda	AWS Lambda
lex	Amazon Lex
license-manager	AWS License Manager
logs	Amazon CloudWatch Logs
macie	Amazon Macie Classic
macie2	Amazon Macie
mediaconnect	AWS Elemental MediaConnect
mediaconvert	AWS Elemental MediaConvert
medialive	AWS Elemental MediaLive
mobiletargeting	Amazon Pinpoint
mq	Amazon MQ
neptune-db	Amazon Neptune
opsworks	AWS OpsWorks
opsworks-cm	AWS OpsWorks Configuration Management
organizations	AWS Organizations
outposts	AWS Outposts
personalize	Amazon Personalize
polly	Amazon Polly
qldb	Amazon QLDB
quicksight	Amazon QuickSight
rds	Amazon RDS
rds-data	Amazon RDS Data API
rds-db	Amazon RDS IAM Authentication
redshift	Amazon Redshift
rekognition	Amazon Rekognition
resource-groups	AWS Resource Groups
robomaker	AWS RoboMaker
route53	Amazon Route 53
route53domains	Amazon Route53 Domains
s3	Amazon S3
sagemaker	Amazon SageMaker
sdb	Amazon SimpleDB
secretsmanager	AWS Secrets Manager
securityhub	AWS Security Hub
serverlessrepo	AWS Serverless Application Repository
servicecatalog	AWS Service Catalog
servicediscovery	AWS Cloud Map
shield	AWS Shield
sms	AWS Server Migration Service
sms-voice	Amazon Pinpoint SMS and Voice Service
snowball	AWS Snowball
sns	Amazon SNS
sqs	Amazon SQS
ssm	AWS Systems Manager
ssmmessages	Amazon Session Manager Message Gateway Service
states	AWS Step Functions
storagegateway	Amazon Storage Gateway
sts	AWS Security Token Service
support	AWS Support
swf	Amazon Simple Workflow Service
textract	Amazon Textract
timestream	AWS Timestream
transcribe	Amazon Transcribe
transfer	AWS Transfer for SFTP
translate	Amazon Translate
trustedadvisor	AWS Trusted Advisor
waf	AWS WAF
waf-regional	AWS WAF Regional
wafv2	AWS WAF V2
workdocs	Amazon WorkDocs
worklink	Amazon WorkLink
workspaces	Amazon WorkSpaces
xray	AWS X-Ray

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Completion checklist

• [x] Additions and changes have unit tests
• [x] Unit tests, Pylint, security testing, and Integration tests are passing.. GitHub actions does this automatically
• [x] The pull request has been appropriately labeled using the provided PR labels